Test memory usage for particle data; add PSC_PLOT_DASK_CHUNK_SIZE#22
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JamesMcClung merged 5 commits intomainfrom Apr 17, 2026
Merged
Test memory usage for particle data; add PSC_PLOT_DASK_CHUNK_SIZE#22JamesMcClung merged 5 commits intomainfrom
PSC_PLOT_DASK_CHUNK_SIZE#22JamesMcClung merged 5 commits intomainfrom
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dd.read_hdf without chunksize creates one partition per file, and set_index(sorted=True, divisions=...) locks partition boundaries to file boundaries. Both together mean dask can't subdivide a 16GB file. Pass the chunksize from config and let dd.concat carry partition-level granularity through to downstream operations.
Helper and sanity test for producing synthetic PSC-format particle HDF5 files in tests. Matches the subset of fields lib.particle_util reads. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Verify that reducing PSC_PLOT_DASK_CHUNK_SIZE reduces peak memory during the particle binning pipeline — i.e., that partitioning actually streams. Runs each pipeline variant in a subprocess for a clean ru_maxrss reading. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Setting the dask index actually was incorrect, so this also fixes that.